code: def __init__(self, trace_id):
      self.trace_id = trace_id
  
imports: import argparse
  import sys
  import threading
  import uuid
  import pyarrow
  import pyarrow.flight
label_desc: Use image node_id 1 to create a new TracingServerMiddleware object from inherited base classes: flight with example: obj = TracingServerMiddleware(trace_id)